EP1888913A1 - Kraftstoffinjektor mit gehäuse, sowie verfahren zum fertigstellen und beschriften des gehäuses - Google Patents
Kraftstoffinjektor mit gehäuse, sowie verfahren zum fertigstellen und beschriften des gehäusesInfo
- Publication number
- EP1888913A1 EP1888913A1 EP06763239A EP06763239A EP1888913A1 EP 1888913 A1 EP1888913 A1 EP 1888913A1 EP 06763239 A EP06763239 A EP 06763239A EP 06763239 A EP06763239 A EP 06763239A EP 1888913 A1 EP1888913 A1 EP 1888913A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- actuator
- fuel injector
- actuator cover
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8007—Storing data on fuel injection apparatus, e.g. by printing, by using bar codes or EPROMs
Definitions
- the invention relates to a fuel injector with a housing, in particular a fuel injector with a nozzle-remote from a male connector of a contact tongue carrier for a piezoelectric actuator. Furthermore, the invention relates to a method for finishing the housing and a method for laser marking, in particular a laser-transparent cover of the housing.
- the service life of piezo drives for fuel injectors depends - in addition to their generally limited service life - in particular on the installation environment of the piezo drive.
- the piezoelectric drive of a fuel injector is particularly susceptible to engine oil and fuel, whereby, when engine oil or fuel reaches the piezoelectric drive, its maximum service life is shortened.
- a piezostack of the piezo drive is sealed upwards by means of a sealing element which is fixed by a contact carrier which allows the electrical contacting of the piezo-stack from the outside with respect to a housing.
- the sealing element is designed as a liquid-tight, but as a gas-permeable sealing element. This ensures that on the one hand in the piezo stack resulting gases can be transported to the outside or ambient air can reach the top of the piezo stack; but on the other hand liquid harmful media can not get into an area directly over the piezo stack. So that the gases can escape between the sealing element and the Kunststoffzun- genpronounced, this is provided with a through hole or with a slot.
- Epoxy resin of the nozzle needle remote side of the piezo drive is already affected by the contact tongue carrier, good ventilation of the sealing element and thus the piezo drive affected again.
- a sealing arrangement is to be provided which seals an actuator interior against operating media of the engine, but at the same time is permeable to gaseous media.
- the object of the invention is achieved by means of a housing for an actuator of a fuel injector, wherein a circumferentially around the actuator around arranged, top open Steckeranspritzung is covered or encapsulated by means of a Aktuatorde- cork that good ventilation between the lid and the Steckeranspritzung resulting actuator space is guaranteed.
- the actuator cover is attached by means of a laser welding process to the Steckeranspritzung.
- the actuator cover and the plug injection have one in at least one axial direction and / or at least in a radial direction of the
- Fuel injector extending coverage area in which the laser beam is incident and laser welding the actuator cover with the Steckeranspritzung.
- no further encapsulation of the fuel injector or a casting of the connector injection with epoxy resin is necessary, whereby a simple and cost-effective coverage of the piezo drive is ensured.
- covering the piezo drive according to the invention with a cover penetration of solid objects into the area of the electrical contact is prevented, whereby the electrical operating safety of the piezo drive is ensured.
- the invention provides a use of a standard bonding method for plastics, about which there is sufficient knowledge to apply it in such a way that it is possible to obtain durable results.
- the male connector consists of a laser-transparent and the actuator cover made of a laser-absorbing plastic, wherein the actuator cover is inserted into the at least partially substantially hollow cylinder-shaped plug connector for realizing a necessary axial overlap region between the actuator cover and the connector is.
- the laser beam does not have to come in the axial direction of the fuel injector, but can occur over the circumference.
- the preferably perpendicular to the axial direction of the incident laser beam at an angle of + 6 ° to its vertical position relative to the axial direction around vary without sacrificing the weld quality must be made.
- the laser-absorbing Aktuatorde- disgusting a caption by means of a laser is preferably made of a laser-optimized plastic, which ensures good labeling in addition to its laser-absorbing properties, since in the plastic laser incidence in optically um tode pigments are incorporated, which allow a good contrast between laser marking and the rest of the actuator cover.
- the actuator cover according to the invention may be labeled prior to welding to the plug injection or thereafter.
- the plug-injection of a laser-absorbing and the actuator cover of a laser-transparent plastic wherein for the realization of a necessary radial overlap region between the actuator cover and Steckeranspritzung the Ak Tuatordeckel on the Steckeranspritzung is at least partially placed.
- the actuator cover it is possible to weld the actuator cover through the latter in the radial region to the connector injection, wherein the laser beam does not have to be incident in the radial direction of the fuel injector, but can be incident on a circumference of the actuator cover.
- the preferably parallel to the axial direction incident laser beam at an angle of + 6 ° around its relative to the axial direction parallel position around vary without sacrificing the weld quality must be made.
- the radial overlap region which adjoins the axial overlap region directly is preferably provided between the actuator cover and the plug injection.
- this radial overlap region additionally permits laser welding of the actuator cover with the plug extrusion on a lower side radially inwards with respect to the actuator cover.
- this structure additionally allows a laser welding of the actuator cover with the plug extrusion on an outer collar axially with respect to the actuator cover.
- the housing has a reaching into the housing through-hole on, which is preferably designed as a gap between Steckeranspritzung and actuator cover.
- the durability of the piezo stack is increased, as well as a correspondingly arranged position of this recess allows leakage located in the actuator housing operating media of the engine.
- the provision according to the invention of the actuator cover and of the slot ensures mechanical protection of the electrical contacting of the piezo drive and at the same time realizes a flow through the injector drive, for example with engine oil. Furthermore, it is not possible for the actuator space to break through with engine oil or other operating media, so that the sealing membrane of the piezo stack can not be completely filled with liquid.
- the creation of a liquid-tight, but gas-permeable ventilation arrangement according to the invention between an environment of the injector housing and the piezo stack leads to a considerable extension of the life of the piezoactuator.
- the plastics of the two components being chosen from their respective absorption spectra, such that the laser beam first penetrates the plug injection and is subsequently absorbed by the laser-absorbing actuator cover (first variant). or that the laser beam first penetrates the actuator cover and is subsequently absorbed by the laser-absorbing plug-in connector (second variant).
- the laser-transparent plastic in the infrared wavelength range should be transparent to a laser.
- a zero gap ie a gap with the smallest possible diameter as well as partial contact surfaces of the two connecting surfaces, should exist between the two connection surfaces in the overlap area. be partner realized.
- this zero gap is realized by a force, after which, during the subsequent laser welding by a localized melting of the interfaces forms a mixing plastic melt of the two connection partners, which achieves a permanent and non-detachable connection after cooling.
- the overlap region has an angle, preferably a 45 °, with respect to the axial direction of the fuel injector.
- the zero gap can be realized, for example, in other embodiments of the cover area, in particular in the case of axial areas, in that a respective inner diameter of the plug injection in the area of the actuator cover to be inserted is slightly smaller than the relevant outer diameter of the actuator cover.
- the overlap region between the actuator cover and the plug-in connector has a step.
- the corresponding stepped portion of the Steckeran mousseung in the circumferential direction is at least partially encircling.
- a sealing connect bundle which seals the overlap region with respect to the actuator space, so that during laser welding no plastic melt can get into the actuator space.
- the actuator cover has at least one tab which extends in the axial direction and has a substantially rectangular shape and which can be inserted into correspondingly shaped recesses in the plug claim.
- the ventilation gap is preferably provided between an end face of the tab and the recess in the male connector, which extends from the outside between the male connector and the front side of the tab and from there preferably continues inwards in a labyrinth-like manner.
- the labyrinth gap can be guided almost arbitrarily by means of a corresponding configuration or corresponding recesses in the axial and radial region of the overlap region or a corresponding configuration of the actuator cover in the interior and a corresponding design of the male encapsulation in its course.
- the invention relates to a method for completing an actuator housing of a fuel injector, wherein for the first variant of the invention, the laser beam used for the method substantially perpendicular to the axial direction of the Kraftstoffinj ektors in the overlap region between the actuator cover and Steckeranspritzung.
- the laser beam used for the process falls substantially perpendicular to the radial direction of the fuel injector into the overlap area between the actuator cover and the plug-in connector.
- a laser marking of a preferably transparent in the infrared wavelength range laser transparent component for.
- a laser is used which has a wavelength which differs from that used for the laser welding method, preferably clearly different.
- a laser in ultraviolet or visible light is suitable for laser inscription.
- a blue laser having a wavelength of about 355 nm or a green laser having a wavelength of about 532 nm pigment change occurs in the case of the ultrasound material B3WG6LT sw23229 made by BASF in the infrared wavelength range.
- laser-transparent materials can be adjusted by means of laser additives so that there are good pigment envelopes.
- uncoloured or natural-colored materials transparent in the infrared wavelength range can be labeled with a CC> 2 laser.
- the invention relates to an engine with a fuel injector, in turn, the actuator according to the invention tuatorgephaseuse, wherein the fuel injector is preferably arranged substantially completely below a cylinder head cover of the engine.
- the geometry of the overlap area for the laser welding process, as well as the arrangement of laser-transparent base housing and laser-absorbing cover (first variant of the invention) or of laser-absorbing base housing and laser-transparent cover (second variant of the invention) are also applied to other housing.
- the actuator cover geometry is also applicable to other covers.
- the laser marking process for the laser-transparent cover is also applicable to other laser-transparent components.
- Fig. 1 is a sectional view of the invention
- FIG. 2 shows the injector housing according to the invention from FIG. 1 in an enlarged sectional illustration
- FIG. 3 is a perspective plan view of a housing cover according to the invention.
- FIG. 4 is a perspective bottom view of the actuator cover according to the invention from FIG. 3.
- FIG. 1 shows a portion of a fuel injector 1 according to the invention, wherein the fuel injector 1 has an injector arrangement extending in an axial direction A, in which a fuel injection nozzle is coupled to a piezo drive for actuating the fuel injection nozzle.
- 1 shows an upper section of the piezo drive, which is covered at the top by means of a housing,
- the piezo drive has an actuator 1 and a housing, which comprises a casing 10 or a plug injection 10 and an actuator cover 20, wherein the Steckeranspritzung 10 is closed by means of the actuator cover 20 above.
- the Steckeranspritzung 10 is configured in the area of the actuator 1 substantially completely around the actuator 1 and has a substantially hollow cylindrical shape. Lateral projecting at the Steckeranspritzung 10 is a device for connecting the actuator 1 to a power supply.
- the top open Steckeranspritzung 10 fixed a contact tongue carrier 70, which defines a liquid-tight and gas-permeable sealing element 60 on the actuator 1. Furthermore, the contact tongue carrier 70 serves for the electrical contacting of two piezo-pins, which supply a piezoelectric pencil 90 arranged in the actuator 1 with electric current.
- the contact tongue carrier 70 provides the electrical contacts necessary for the electrical contacting within the laterally projecting device of the male connector 10.
- the Steckeranspritzung 10 is closed by means of the Aktuatordeckels 20 above, wherein between the actuator cover 20 and Steckeranspritzung 10 preferably a gap 40 is formed, which allows fluid communication of an actuator 50 with an installation environment 2 of the actuator 1 and the Kraftstoffinj ector 1.
- the sealing element 60 arranged within the actuator space 50 seals the actuator 1 in a liquid-tight manner in an upper region with respect to its surroundings, the sealing element 60 being gas-permeable and therefore allowing ventilation of the piezo-stack 90 in the upper region.
- the air for this purpose can pass through the gap 40 between the actuator cover 20 and Steckeranspritzung 10 in the actuator chamber 50 and from there through the gas-permeable sealing element 60 through the upper portion of the piezo stack 90.
- the gap 40 is preferably designed as a labyrinth gap 40 (see below).
- the upper portion of the Steckeran mousseung 10 in a covering area 30 with the actuator cover 20 can be seen better.
- the overlapping region 30 between the actuator cover 20 and the plug-in connector 10 is that region in which the actuator cover 20 is laser-welded to the connector-injection 10.
- the overlapping region 30 has at least one axial region 31 and / or one radial region 32.
- the covering area 30 may have a sloping area, which may be a
- Preferred for such a slope is a 45 ° angle measured from top to bottom, which is preferably formed in at least partially circumferential direction as a ring inclined region between the Actuator lid 20 and the Steckeranspritzung 10.
- Various combinations of axial sections 31, radial sections 32 and / or inclined sections are of course possible.
- the corresponding areas 31, 32 and the oblique area are in this case formed in the circumferential direction between the actuator cover 20 and Steckeranspritzung 10 at least partially encircling. These range combinations can occur in the circumferential direction and also in the radial direction R or alternate.
- the radial region 32 which together form a 90 "step, adjoins the axial region 31 from the upper side of the actuator cover 20.
- the actuator cover 20 has a Axialrand 21 and a radial edge 22, and the plug An injection 10 an axial section 11 and a radial section 12.
- Axial section 11 and axial edge 21 in this case form the axial region 31 and the radial section 12 and the radial edge 22 form the radial region 32.
- the outer financesskan- te with the Steckeranspritzung 10 preferred outside is aligned.
- the actuator cover 20 and plug-injection 10 are laser welded together.
- the laser beam preferably enters the transition region 30 over the circumference of the plug-in injection molding 20 at an approximately 90 "angle with respect to the axial direction A of the fuel injector 1.
- the laser beam penetrates the at least in the overlap region
- the actuator cover 20 is made of a laser-absorbing material, at least in its region to be welded (axial edge 21, radial edge 22). The laser beam striking the axial edge 21 melts the material of the actuator cover 20 in the axial region
- the radial region 32 adjoins the axial region 31 from the outside, wherein in the exemplary embodiment shown in FIG. 2 the upper part of the radial region 32 is formed by the laser-absorbing actuator cover 20 and the lower part by the laser-transparent connector injection 10 ,
- the in the axial area 31 incident laser beam 30 in turn heats the actuator cover 20 at the radial edge 22, which in turn emits the resulting heat in the radial section 12, wherein also a common melt is formed, which sets the actuator cover 20 to the Steckeranspritzung 10 after solidification.
- the corresponding axial 31 and radial region 32 at least partially in the circumferential direction around the Steckeranspritzung 10 and the actuator cover 20 formed.
- three mutually independent overlap regions 30 are provided in the circumferential direction between the actuator cover 20 and plug injection 10, wherein two overlap regions 30 rotate by less than 90 °, preferably 45 ° to 75 °, and the third overlap region 30 by less than 180 °, preferably 90 ° circulates to 150 °.
- the respective sealing collar 25 runs as far in the circumferential direction as the corresponding covering area 30.
- the axial region 31 and the radial region 32 need not necessarily be provided. It is also possible to provide only the axial portion 31 and perform a positioning of the actuator cover 20 otherwise, for. B. tabs 27 (see below), a simple Bund, which is formed by a solid cylinder 23 (see below), o. ä.
- the laser-absorbing actuator cover 20 can also be laser-welded to the laser-absorbing sheath 10 by means of a laser beam incident in the axial direction A.
- the sheath 10 covers the actuator cover at the top (ie, from the direction from which the laser beam comes) at least partially at a peripheral area, preferably at an outer peripheral area.
- the laser beam for the welding process in this case meets in the axial direction A on the part of the casing 10 which covers the actuator cover 20 and melts the underlying actuator cover 20.
- the laser welding mainly takes place in a radial area.
- the first variant according to the invention of a connection of the preferably one-piece, laser-absorbing actuator cover 20 with the laser-transparent plug injection 10 for a second-generation diesel injector drive makes it possible to use the laser beam used for the laser welding process in the radial direction R (preferred embodiment) or axial direction A of the fuel injector 1 to be thought of in the overlap area 30.
- the actuator cover 20 With an axial force on the plug injection 10 and / or to provide a radial force on the Aktua- tordeckel 20 the Steckeranspritzung 10 in an upper area against the Actuator cover 20 to press.
- the latter can be realized for example by a correspondingly small inner diameter configuration of the Steckeranspritzung 10 in the radial region 32, wherein a corresponding outer diameter of the Aktuatordeckels 20 is slightly larger.
- the Steckeranspritzung 10 deforms elastically in the upper region upon insertion of the actuator cover 20, whereby a corresponding radial force acts on the actuator cover 20; or the Steckeranspritzung 10 is slotted in the axial direction in its peripheral ring radially through the circumference, whereby the male connector 10 is widened when inserting the slightly larger in the area concerned designed actuator cover 20, which then exerts a radial force on the actuator cover 20.
- the actuator cover 20 has a sealing collar 25, which adjoins the covering area 30 on the inside.
- This sealing collar 25 prevents the melt from flowing into the actuator space 50 of the actuator 1.
- the sealing collar 25 can directly adjoin the axial edge 21 of the actuator cover 20 or, in one embodiment, only has a radial portion 32, directly to the radial edge 22 of the actuator cover 20, or, as in the illustrated embodiment, to the combination of axial 31 and radial portion 32.
- the sealing collar 25 can also serve as a centering or guide collar for the actuator cover 20 on the Steckeransprit- tion 10.
- the plug-injection 10 is made entirely of a laser-transparent material and the actuator cover 20 completely from a laser-absorbing and preferably good laser-writable material.
- the this purpose own Any plastics are preferred Durethane ®, in a preferred embodiment of the invention the material of the actuator cover 20 Durethan ® AKV 30 H2.0 LO 901050 is black and which is provided with trans- mittierenden properties Steckeranspritzung 10 from Durethan ® AKV 30 H2.0 LT 904040 is laser-transparent. If the male connector 10 and / or the actuator cover 20 are each not made of a single material, it is important that the male connector 10 at least in the overlap region 30 laser transparent and the
- Actuator 20 is constructed to absorb laser at least in the overlap region 30.
- the actuator cover 20 is preferably laser-writable at the top, which can best be realized with a fully laser-absorbing actuator cover 20, which however is not absolutely necessary.
- the plastic materials of the actuator cover 20 or of the plug-injection 10 are formed in different colors at least in the laser welding area.
- FIGS. 3 and 4 show a preferred embodiment of the actuator cover 20, in each of which a cross-sectional profile in the diameter direction of the actuator cover 20 is hatched.
- Fig. 4 shows the embodiment of the actuator cover 20 according to the invention, wherein the top of the actuator cover 20 is below.
- the actuator cover 20 is constructed essentially of two concentrically arranged full cylinders 23 and 24.
- the two of the two preferably slightly flatter solid cylinder 23 in this case has a larger outer diameter than the preferably slightly thicker solid cylinder 24, which is preferably formed materially integral with the solid cylinder 23.
- the actuator cover 20 has at least one tab 27 at its periphery.
- an outer side of the tab 27 is preferably aligned with the outer circumference of the solid cylinder 23.
- two tabs 27 lie diametrically opposite each other, the third tab 27 being arranged centrally on an outer peripheral portion between the two other tabs 27.
- a selected tab far right in Fig. 4 has two each approximately at right angles to her adjacent other tabs 27 which are opposite to the circumference.
- the sealing collar 25 which additionally extends radially inwards with respect to the actuator cover 20, adjoins an outer circumference of the solid cylinder 24 axially with respect to FIG. 4.
- the sealing collar 25 completely circulating be formed or, as in the illustrated preferred embodiment, be excluded in a region of the tabs 27, wherein the sealing collar 25 is preferably excluded except for the level of the solid cylinder 23.
- the step portion of the solid cylinder 23 extends axially up to the level of the solid cylinder 24.
- step portions located in the circumferential direction between the tabs 27 are removed in the area around the tabs 27 around. These recesses 29 serve to drain liquid from the actuator space 50 and may form part of the gap 40.
- the tabs 27 are formed at a distance from the solid cylinder 24.
- the actuator cover 20 is configured as shown in FIGS. 3 and 4. guriert, whereby the proportions are not shown to scale. 3 and 4 relate to a relative position of the respective sections, regions, recesses and edges of the actuator cover 20 to each other.
- the gap 40 provided in the actuator housing according to the invention is, in its simplest form, a gap 40 which leads directly into the actuator space 50.
- this gap 40 is designed as a simple rectilinear gap 40 between an end face of a tab 27 and an end face region of the plug-in injection 10.
- the provision according to the invention of the gap 40 on an end face of a tab 27 of the actuator cover 20 is advantageous since it makes it possible to provide the gap 40 or a portion of the gap 40 at the bottom in the actuator housing 50, which simply allows operating media to run out.
- the gap 40 in the actuator housing can also extend axially inwards on the tabs 27 to the actuator space 50.
- two preferred curves of the gap 40 are shown in FIG. 4 with dashed double arrows. In this case, the double arrows clarify the path of the fluid out of the actuator space 50 or the path of the ventilation air into the actuator space 50.
- the gap 40 extends coming from the outside on an end face of the tab 27 inwardly into the actuator housing, planted inside the actuator cover 20 along the tab 27 axially upwards (in the assembled state, for example, in Fig. 1 to see) to open at the height of the solid cylinder 24 in the actuator 50 space.
- the gap 40 after it continues along the flap 27, does not open directly at the height of the solid cylinder 24 into the actuator.
- the fuel injector 1 shielded with the actuator housing according to the invention is installed in an engine of a motor vehicle such that at least one outboard section of the gap 40 is below or below the lowest point of the actuator cover 20 when the fuel injector 1 is installed.
- the actuator cover 20 is transparent to lasers and preferably also integrally formed, with the actuator cover 20 being fixedly connected to the plug-on injection molding 10 or the encapsulation 10 by means of a laser welding process.
- the laser beam is incident on the actuator cover 20, preferably over its upper outer edge, substantially parallel to the axial direction A or substantially perpendicular to the radial direction R of the Kraftstoffinj ector 1 and is absorbed by the underlying sheath 10, which is melted.
- the sheath 10 is designed to be laser absorbent for the laser welding process used here.
- the radial region 32 and the axial region 31 must be provided. It is also possible to provide only the radial region 32 and perform a centering of the actuator cover 20 otherwise, for. B. on the tabs 27, the sealing collar 25 o. ⁇ .
- the laser-transparent actuator cover 20 can also be laser-welded to the laser-absorbing sheath 10 by means of a laser beam incident in the radial direction R.
- the laser beam for the welding process in this case meets in the radial direction R on the collar of the actuator cover 20 on the casing 10 and melts them.
- the laser welding takes place here mainly in an axial region.
- the material of the actuator cover 20 z. B. Durethan ® AKV 30 G H2.0 LT 904040 natural.
- the Steckeran mousseung 10 here is different visually and in their transmission properties to Actuator cover 20, wherein the Steckeranspritzung 10 z.
- B. PA is black or consists of Durethan ® AKV 30 H2.0 LO 901050 black.
- the second variant according to the invention of a connection of the preferably one-piece, laser-transparent actuator cover 20 with the laser absorbing Steckeran mousseung 10 for a diesel injector second generation allows the laser beam used for the laser welding process in the axial direction A (preferred embodiment) or in the radial direction R of Kraftstoffinj ector 1 in the Cover area 30 to come up.
- This second variant of the invention is virtually the "kinematic" reversal of the first variant, so that, in addition, the same applies to what has been said for the first variant for the second variant.
- the actuator cover 20 it is possible to weld the actuator cover 20 with a suitable laser or laser beam with the Steckeranspritzung 10 and then, preferably in the same device, with a traceability code, a so-called traceability code, eg. As a data matrix code, preferably from the same direction (as for the laser welding) to label.
- the Data Matrix Code is a 2D code and is used for permanent direct labels, eg. On engine and engine parts as well as on tools and surgical medical instruments. applies.
- the wavelength X 2 of the marking laser must be selected so that the laser beam is absorbed on / in the surface of the actuator cover 20 and causes a change in the pigments of the actuator cover 20 or otherwise a difference in contrast.
- the problem here is that the actuator cover 20 is laser-transparent at least for certain wavelengths ⁇ i of laser beams for laser welding processes.
- the material of the actuator cover 20 does not fold over with the marking laser since the actuator cover 20 is transparent to the laser light of the Nd: YAG laser.
- the wavelength X 2 of the marking laser used must therefore be selected so that the laser beam is absorbed in the actuator cover 20 and a contrast envelope on the surface takes place.
- the wavelength X 2 of the laser beam for the lettering z. B. in the ultraviolet or visible wave spectrum. Furthermore, it is z.
- the actuator cover 20 it is possible for the actuator cover 20 to be laser light-transparent at one end of the infrared, ultraviolet or visible spectrum for a welding laser beam of the wavelength Xi and at the other end of the respective spectrum to be laser light-absorbing for a corresponding marking laser beam of the wavelength X 2 .
- the wavelengths X 2 of the inscription laser beam must be so far away from the wavelengths Xi of the welding laser beam that an envelope of Part 20 existing pigments or otherwise contrasting at the points of impact of the laser beam on the component 20 can take place.
- the laser transparent at the wavelength ⁇ i material of the component 20 can be adjusted so that it comes to good or easily visible or easily detectable pigment envelopes in the inventive method.
- suitable pigmentation non-laserable plastics can be labeled inscribed. Additional pigments in many plastics allow color-intensive reactions with the laser beam, which are caused both by a reaction on the polymer and on the pigment itself.
- Such an inscription of a component 20 or actuator cover 20 laser-transparent in the infrared wavelength range ⁇ i succeeds, for example.
- a CC> 2 laser is suitable for the method according to the invention.
- B. coded marks on the component 20 can be provided.
- uncoloured plastics such. B. gray or natural colored (ie not offset with additives) plastics, do not produce a pigment envelope in a laser marking, but can be marked while maintaining their transparency from light to dark with a CC> 2 laser.
- the method according to the invention uses a laser-transparent component in a first wavelength range ⁇ i by means of a laser which has a different from the first wavelength ⁇ i. preferably has significantly different wavelength X 2 , is also transferable to other wavelength ranges.
- laser transparent is intended in particular to mean that the laser-transparent joining partner (plug injection 10 in the first variant and actuator cover 20 in the second variant) should be transparent in the infrared wavelength range for a laser through a certain material thickness. Usually, such a material thickness is more than 5mm, so that enough laser energy can still hit the other joining partner in order to melt it.
- the other joining partner in this case is the laser-absorbing partner.
- this laser is laser-transparent on the one hand for the welding laser beam and on the other hand for the inscription laser beam.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005025147.1A DE102005025147B4 (de) | 2005-06-01 | 2005-06-01 | Kraftstoffinjektor mit Gehäuse, sowie Verfahren zum Fertigstellen und Beschriften des Gehäuses |
| PCT/EP2006/062546 WO2006128812A1 (de) | 2005-06-01 | 2006-05-23 | Kraftstoffinjektor mit gehäuse, sowie verfahren zum fertigstellen und beschriften des gehäuses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1888913A1 true EP1888913A1 (de) | 2008-02-20 |
| EP1888913B1 EP1888913B1 (de) | 2011-03-09 |
Family
ID=36685921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06763239A Active EP1888913B1 (de) | 2005-06-01 | 2006-05-23 | Kraftstoffinjektor mit gehäuse, sowie verfahren zum fertigstellen und beschriften des gehäuses |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20080197314A1 (de) |
| EP (1) | EP1888913B1 (de) |
| AT (1) | ATE501352T1 (de) |
| DE (2) | DE102005025147B4 (de) |
| WO (1) | WO2006128812A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140096609A1 (en) * | 2012-10-08 | 2014-04-10 | Tung Thih Electronic Co., Ltd. | Ultrasonic sensor device and method for assembling the same |
| DE102013216836A1 (de) | 2013-08-23 | 2015-02-26 | Continental Automotive Gmbh | Stellantrieb zur Betätigung eines Einspritzventils und Einspritzventil |
| DE102014102362A1 (de) * | 2014-02-24 | 2015-08-27 | Norma Germany Gmbh | Verbinder für eine Fluidleitung |
| DE102018128513B4 (de) * | 2018-11-14 | 2022-09-22 | Valeo Schalter Und Sensoren Gmbh | Ultraschallsensor mit lasergeschweißtem Deckel und Beschriftung |
| KR20230117565A (ko) * | 2020-12-04 | 2023-08-08 | 소니 세미컨덕터 솔루션즈 가부시키가이샤 | 센서 모듈 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09510930A (ja) * | 1994-03-31 | 1997-11-04 | マルクアルト ゲーエムベーハー | プラスチックワークピース及びその製造方法 |
| DE19712590A1 (de) * | 1997-03-26 | 1998-10-01 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
| DE50010902D1 (de) * | 1999-04-20 | 2005-09-15 | Siemens Ag | Fluiddosiervorrichtung |
| LU90784B1 (en) * | 2001-05-29 | 2002-12-02 | Delphi Tech Inc | Process for transmission laser welding of plastic parts |
| JP3823065B2 (ja) * | 2002-04-23 | 2006-09-20 | 愛三工業株式会社 | レーザ溶着方法 |
| DE10345105B4 (de) * | 2002-10-02 | 2015-02-19 | Siemens Vdo Automotive Inc. | Konusverschluss für Laserschweissnaht an einem Bestandteil einer Luftansaugung |
| DE10246691A1 (de) * | 2002-10-07 | 2004-04-22 | Siemens Ag | Einspritzvorrichtung |
| DE10310788A1 (de) * | 2003-03-12 | 2004-09-23 | Robert Bosch Gmbh | Brennstoffeinspritzventil und Verfahren zu dessen Montage |
| DE10315067A1 (de) * | 2003-04-02 | 2004-10-28 | Siemens Ag | Piezoelektrischer Aktor mit einem zweiteiligen hülsenförmigen Gehäuse und Verfahren zur Herstellung eines Gehäuses für einen piezoelektrischen Aktor |
| WO2005061878A2 (en) * | 2003-12-19 | 2005-07-07 | Siemens Vdo Automotive Corporation | Polymeric bodied fuel injectors and method of manufacturing the polymeric bodied fuel injectors |
| DE102004042352B4 (de) * | 2004-08-20 | 2007-08-09 | Siemens Ag | Kraftstoffinjektor für eine Brennkraftmaschine |
| DE102004059104B4 (de) * | 2004-08-20 | 2007-09-06 | Siemens Ag | Abdichtungsanordnung eines Piezoaktors für einen Kraftstoffinjektor sowie Verfahren zur Montage eines Kraftstoffinjektors |
-
2005
- 2005-06-01 DE DE102005025147.1A patent/DE102005025147B4/de not_active Expired - Fee Related
-
2006
- 2006-05-23 EP EP06763239A patent/EP1888913B1/de active Active
- 2006-05-23 US US11/916,238 patent/US20080197314A1/en not_active Abandoned
- 2006-05-23 WO PCT/EP2006/062546 patent/WO2006128812A1/de not_active Ceased
- 2006-05-23 AT AT06763239T patent/ATE501352T1/de active
- 2006-05-23 DE DE502006009058T patent/DE502006009058D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006128812A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006128812A1 (de) | 2006-12-07 |
| US20080197314A1 (en) | 2008-08-21 |
| EP1888913B1 (de) | 2011-03-09 |
| DE102005025147A1 (de) | 2006-12-07 |
| ATE501352T1 (de) | 2011-03-15 |
| DE502006009058D1 (de) | 2011-04-21 |
| DE102005025147B4 (de) | 2014-11-06 |
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